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Finding the Fourth Proportional to 66,627.28, 91,789.28 and 46,447.44

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Solution

The fourth proportional to 66,627.28, 91,789.28 and 46,447.44 is: 63,988.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,627.28 : 91,789.28 = 46,447.44 : x
  2. Step 2: Convert to fraction form
    66,627.28/91,789.28 = 46,447.44/x
  3. Step 3: Cross multiply
    66,627.28x = 91,789.28 × 46,447.44
  4. Step 4: Simplify right side
    66,627.28x = 4,263,377,075.44
  5. Step 5: Solve for x
    x = 4,263,377,075.44/66,627.28
  6. Step 6: Final answer
    x = 63,988.46

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.